Typographical mold



Mah i4, 1933. R. H TURNER 1,901,836

TYPOGRAPHI CAL MOLD Filed Aug. 6, 1951 2 Sheets-Sheet l arZSO/WH. 75m/er' INVENTOR March 14, 1933. R. H. TURNER TYPOGRAPHICAL MOLD' Filed Aug. 6, 1951 2 Sheets-Sheet 2 f TTORNEY Patented Mar. 14, 1933 PATET OFFIC RANSOM E. TURNER, OF AUBURNDALE, NEW YORK, ASSIGNOR TO INTE-RTYPE CORPORA- TION, OF BROOKLYN, NEW YORK, A CORPORATON OF NEW YORK TYPOGRAPHICAL llIOLD Application led August 6, 1931. Serial No. 555,575.

The object of the present invention is to provide a typographical mold for casting type bars of low height, similar in purpose to the rib-bed type bars commonly used in printf ing of the kind commercially known as multigraph printing, but which improved type bars possess advantages over those previously used.

Type 4bars of this general class as previously used have been provided with grooves on their longitudinal sides for clamping or retaining them on grooved or ribbed printing beds or cylinders from which the printing is done directly, suitable molds being provided for such type bars to enable them to be cast in a line casting machine of the general class shown and described in Letters Patent No. 436,532 granted Sept. 16, 189() to O. Merlrenthaler, such previously used longitudinally grooved type bars, the molds for casting them and the grooved or ribbed printing bed or cylinder therefor being shown and described or example in Letters Patent No. 1.122,819, granted December 29, 1914 to G. T.

` Trundle, Letters Patent No. 1,615,031, granted Jan. 18, 1927 to J C. Norwood et al., and Letters Patent Nos. 1,679,261 granted July 31, 1928 and 1,684,360 granted Sept. 1 1, 1928 to J. C. Norwood. Such previously used longitudinally grooved type bars however presented the disadvantage that they could be used only with relatively wide spacing between the type bars or lines, due to the presence of the retaining ribs on the printing bed or cylinder which occupied positions between the sides or the type bars.

The particular object of the present nvention is to provide a mold which is adapted to be used on a line casting machine of the general class disclosed in the Mergenthaler patent referred to above but which is capable of casting low height type bars of improved form and which diiler from the previously used type bars in that they are adapted to be applied to printing beds or cylinders in a manner which requires that their bottom faces and their sides be exactly flat and their sides parallel and that their height be considerably less than that of the previously used low height type bars, thus enabling the type bars to be placed together side to side without spacing between them, and the ends of the improved type bars are provided with means for gripping or retaining the type bars in place or in printing position instead of retaining them by their sides as was done with the previously used longitudinally grooved type bars.

Type bars of the improved kind are especially suitable for the newly developed methods ot printing telephone-directories, classified city directories, classified financial rating lists and many other similar classes of composition where it is desirable or necessary to confine the printed matter to minimum column space and where, due to frequent alterations, it is more economical and time saving to keep the type set up on convenient type retaining blankets, thus requiring very small storage space although providing immediate access thereto and enabling substitution of type bars toL cover alterations, with facility.

In the accompanying drawings: l

Fig. 1 is a front elevation of the mold wheel of a line casting machine equipped with a mold embodying the present invention, the mold being shown in casting and egecting positions respectively by the full and dotted lines;

Fig. 2 is a perspective view of the mold section and with parts broken away;

Fig. 3 is a transverse section through the mold taken on the line 3 3 of Fig. 1, showing the mold elements and the matrix line in casting relation and showing a slug cast therein;

Fig. 4 is a view similar to Fig. 3 but representing the mold in ejecting position and showing the slug dividing member retracted from the mold cavity;

Fig. 5 is a view similar to Fig. 4, showing the slug in course of ejection from the mold and through the trimming knife;

Fig. 6 is a perspective view, partly broken away, of the complete slug as cast in the mold;

Fig. 7 is a perspectiveview, partly broken away,of the finished low height type bar;

Fig. 8 is a perspective view, partly broken away, showing one mode ot applying the type bars to a print-ing' bed or cylinder.

Figs. 9 and 10 are transverse sections, and Fig. 11 is a 'face view of one end of a mold et modified form.

Similar parts are designated by the same reference characters in the several iigures. The improved typographical mold is shown in the present instance applied to the mold wheel of a line casting machinecf the general class shown and described in the Mergenthaler patent hereinbeicore referred to, the mold wheel operating in the manner usual in machines of that class, the mold 1 comprising a body member 2 and a cap member 3 which, in the preferred embodiment of the invention as herein shown, are both rigidly secured to the mold wheel in any suitable manner such as by the blocks il on the mold wheel and the bolts 5. The mold body and caps are spaced apart, as by liners 5a similar to those commonly used in ordinary line casting molds, to form the mold casting cavity 6 between the mold body and cap members, this mold cavity extending as usual from the socalled constant end et the line at the right (Fig. 1) for a suitable distance toward the left, accordin to the length of the line to be cast, it being' understood that the mold cavity may be varied in height and length, according' to the size or length of the type bar required, by the use of different liners. The mold cavity 6 is of nsual type height from front to back of the mold and the front of 'he mold is adapted to receive the matrix line M while the rear of the mold is adapted to lock up against the mouthpiece of a. metal pot for the inject-ion of metal into the mold cavity for the casting! of a slug therein, in the manner usual in machines of this class. Means is provided for dividing the mold cavity into front and rear compartments in which the low height type bearing portion of the slug and the tano' or remainder thereof may be cast so that the entire slug may be ejected from the mold by the usual ejecting mechanism oi the machine` means of communication being provided however to permit metal to pass from the rear to the front compartment of the mold cavity. In the embodiment of the invention shown. the body member 2 ot the mold is recessed or cut away over a part of its front face as indicated at 7 to provide space for a vertically movable plate 8 which is provided with the usual matrix alining grooves 9. this plate being provided with vertically slotted holes 10 and shoulder screws 11 for guiding' the plate 8 to move toward and from the castingy cavity 6. Justification of the matrix line which, in the usual and known manner, drives the matrices upwardly to aline them accurately against one or another of the horizontal `grooves 9, operating in conjunction with a spring 12 secured to the mold body 2 and bearing on the underside of the plate 8, presses the latter firmly upwardly to its seat against the lip 1e of the mold cap. The plate 8 is provided at its upper edge with a. rib 13 which is set back from the front face of the plate 8 to a depth corresponding` substantially to the height of the type bar to be cast, the front face of the plate 8, however, lying in the same vertical plane with the Jforward edge of the lip 14 of the mold cap 3 so that a metal-tight lock-up will be made with the matrix line, as will be clear from Fig'. 3. The rib 13, when the plate 8 is in its raised position against the lip 14 as shown in Fig'. 3, will therefore extend longitudinally in and project across the mold cavity 6 and will divide or partition off a front compartment 17 which lies between the rib 13 and the matrix line and in which compartment the low height type bar is cast, and a. rear compartment 18 in which the remainder of the slug is cast.

Vfhile the dividing rib 13 extends entirely across the mold cavity trom the mold member 2 to the casting face of the cap member 3, means of communication is provided between the rear and front compartments of the meld cavity and past the dividing rib, such means comprising preferably a series or" undercut transverse grooves or shallow channels 15 in one of the mold members, preferably the mold cap 3, they being' located at intervals along the length thereot' and formed in the mideside of the lip 14, these grooves or channels extending rearwardly past or overlying the top edge of the rib 13 and openin into the. rear compartment ot' the mold cavity and eritendingto the front or matrix engaging edge ot the lip 14.

Then the mold is positioned for the casting of a type bar or slug against a line of assembled matrices as shown in Fig. 3, the molten metal injected trom the rear into the. cavityv (i will flow through the rear compartment 18 of the mold cavity, through the channels 15 which lead forwardly therefrom past the upper edge of the dividing' rib 13 and in to the front compartment 1T which lies in front of the rib thus casting` n slug' s'uch as that shown in Fig. 3. the head or type bearing` portion 17a of which is cast in the front compartment 17, the tangor remainder 18a is cast in the rear compartment 18 and the shallow connecting strips 15a ot which are ci. in the transverse grooves or channels 15.

After a cast has been made in the mold. the mold wheel, as usual in machines ot this class. makes a three-quarter revolution to carry the mold from the upper or horizontal casting position shown b v tul1 lines in Figi'. 1 to ejecting; position as shown by the dotted lines in that figure, and upon reaching ejecting' position, the mold wheel advances and carr is the mold forwardly against ri did blocks which are not shown but are well known in machines ot this ,class7 to support the mold against the forwardV thrust of the ejector h le 19 which drives the slug forwardly out the mold and between the usual trimming` ives 20,'the ejector' blade operating in the manner usual in machines of this class. T i

, in using a mold constructed as tore described, the plate 8 is retractine mold cavity so that it will not the ejection of the slug in the usual anlin order o accomplish this, a bevelied projections 21 are mounten on trie kiie block 2O in positions Jfor their bevelled surfaces 21a to engao'e correspondingly hevelled or inclined sui-races if? :formed the ends oit the plate 8, such engagement between the b veiled surfaces of the blocks Q1 se on the plate 8 occurring as *l i -t the mold ced in tl e usual manner just prior e ction ci" the slug', and riding of these lievelled surfaces 'upon one aniing the adifance of the mold will re- ,e plate S and thus withdraw the dividioin the mold cavity, as shown in thus retracted and held sition against the action of the ejector blade 19, moving' in tlie arrow, Fig. 5, tirstdrives spring 12, th the direction of he tang por ion 182L ot the slug forwardly in 'the mold compartment 18 until the has mont across the open or free space "ei/'icusly occupied by the rib 13, after e of the tang strikes i e portion 173er the i nt compartment 17, and

aring portion 17a being pushed ahead of e tan portion 18a. rllhe strips or connect- Y is 15 lormefl in the.l channels 15 whicn connect the portions 17 @and 18 of l f', are joined to the tang portion 185L 'vely small necks, as will be noted gs. and 6, so that they will easily .t break as soon as the ejector Yolade 19 res ,ves the tang' portion 155a torilly as shown in To further 'facili- 59 tate an easy break-cti at this point, the rear cr artment 18 of the mold cavity in which tl Y portion 18"L is cast is preferably somew less in height than the front cavity 17 so that the necks which join the connecting portions 15a with the tang` portion 18a form suhstantially v^ tically disposed connections linnn resistance to breaking Y al thrust is applied, and any i toe break will be provided f. s ahorethe tang 18 the latter forwardly. the slug is driven forwardly out 0I" the mold trein the position shown in Fig'. 5, the connecting portions 15a will be struck by one the trin ming knives, but the undercut or dovetail formation of the connecting portions 15a will. cause them and the low height type bearing portion 17a to be supported in the grooves 15 and to be guided by these grooves while the shallow type bearing portion 17"L is being engaged with the trimming knife so that this low height type bearing portion 17a will be held squarely to the trimming knives as it is forced between them so that the usual shearing action of the trimming knife will not twist the slug. The pushingl ot the type `bearing portion 12'a of the slug' between the trimming knives trims oli the portions 15a trom the side thereof, but the tang portion 18a which in effect serves as a pusher in conjunction with ejector blade 1915er driving` the type bearing portion 17a between the trimming knives and which tang portion finally passes between the trimming knives, will not be trimmed because of its reduced heightrrelatively to that of the type bearing portion 17a, and this tang portion after passing between the knives will be suitably disposed of as scrap metal.

Another feature of the present invention consists in providingnieans on the mold for forming retaining' means at the ends of the type bar for holding it in printing position in a printing' bed or cylinder. Such means1 as shown in the present instance, ccnl siste of end blocks 241- which are'secured to the plate 8 at the ends of the casting compartment 1.7 and in 'front ot the dividing' rib 13, each of these blocks having a tongue 25 on its inner side which extends into the respective end orp the front mold compartment 17 these tongues extending transversely of the height ot the mold cavity or in the direction` ot moven'ient ot the plate 8. lWhen the plate 8 is in its operative orcasting position.l the type bearing' portion 1'?v1 cast in the front compartment 17 will be formed at its ends with transverse grooves 17h as shown in Figs; G and 7, these grooves kin the type bar corresponding with the ton Q5 ot the blocks 2li, and when the mold is in ejecting position and the plate 8 is retracted as shown in Figs. l and 5, the blocks 24 will be retracted with the plate 8 so that the tongues 25 thereon arev with Avn from the ends ofthe type bearing portion 17a ot the slug' and are removed from the front compartment i? and from the path through which the slug is ejected, as will be clear from Figs. 4 and 5.

The low height type bar produced.; as shown in Fig. 7, has a dat base .and fiat parallel sides and grooves extending transversely across the ends ot' the tyne bar between the top and bottom thereof. Such type bars may be assembled in close relationship with their sides in direct engagement in a piintingbed or cylinder or on ablanket and retained thereon by bars or rails 26 which haveuribs which project into the transverse grooveslb in the ends of the type'bars as shownufor example in Fig. 8, the retaining of the type bars at the ends instead of at the longitudinal sides thereof as heretofore enabling the type bars to be assembled in compact columns with the type bars in direct engagement with other at their sides instead of being spaced apart as was heretofore necessary to accommodate the retaining rails as previously used.

Another embodiment of the invention is shown in Figs. 9, 10, and 11 wherein the casting cavity between the opposed mold members is similarly divided into front and rear compartments 117 and 118 respectively which, however, are normally out of register with one another, and a dividing member 8 is employed which operates in the manner previously described respecting the dividing member 8 but in this instance it has its dividing rib 13a located immediately adjacent to the matrix engaging face thereof. In this instance, channels 15b, like the channels 15 already described to form passages opening into and connecting the front and rear compartments, are provided in the upper edge of the rib 13a on the movable dividing member 8 instead of in the mold member opposite thereto.

After the casting cavity, including both front and rear compartments, is filled with molten metal and the mold wheel on which the mold is mounted in the same manner as the mold previously described revolves to carry the mold into position for ejecting the slug, the dividing member .8a is moved out of the mold cavity in the manner hereinbefore described but the channels or passages 15", which are dovetail in shape or wider at their base than at their top and are contained in the upper edge of the rib 13 on the member 8, cause the portion of the slug cast in the front compartment to move downwardly and such movement will sever the front portion of the slug from the rear portion thereof and carry the former downwardly until it is in alinement with the latter. Ejecticn can then take place by the usual ejector blade in the machine, the parts of the front slug portion engaging the dovetail shaped channels in the member 8*l guiding the front slug portion into the trimming knives as the rear slug portion, under pressure of the ejector 19, is pushed forwardly out of the rear compartment. With this arrangement, tongues 25, similar to the tongues 25 previously described, extend downwardly across the front compartment at the ends thereof but these tongues are formed on blocks 24a which are similar to the blocks 24 previously described but are fixed to the upper or stationary mold member 3, the downward movement of the forward slug portion produced by the retraction of the member 8 disengaging the ends of this slug portion from the tongues 25a.

The molds hereinbefore described provide novel and improved means for casting low height slugs of accurate dimensions and having a flat smooth bottom surface which is obtained without the necessity of trimming as heretofore required in order to insure perfect height throughout the length of the slugs. Moreover, the structures herein shown and described enable the usual type high mold to be employed by dividing such mold into front and rear communicating compartments, thereby enabling the special low height slugs to be produced conveniently and economically in line casting machines of the usual construction without interfering with the production of full type high slugs from standard molds whenever desired.

I claim as my invention 1. A typographical mold comprising opposed members spaced apart t0 form a casting cavity, and means to extend longitudinally in said cavity and divide it into a plurality of compartments of a width at least as great as the width of the space between the mold members, said compartments having means of communication connecting them exteriorly of one of the faces thereof which define the thickness of the slug cast therein, and said dividing means being retractable from said cavity.

2. A typographical mold comprising relatively fiXed opposed members defining a casting cavity of substantially uniform width, and means movable into and retractable from said cavity for dividing the latter into front and rear compartments, passages extending past said dividing means eXteriorly of one of the faces of said compartments which define the thickness of the slug cast therein and connecting said front and rear compartments.

IOC

3. A typographical mold comprising relatively fixed opposed members defining a casting cavity between them, and a dividing member movable relatively to said mold members into the casting cavity to divide the latter into front and rear compartments, passages connecting said compartments eXteriorly of one of the faces thereof which define the thickness of the slug cast therein. and the dividing member forming a casting wall for said passages.

4. A typographical mold comprising opposed member spaced to form a casting cavity open at the front and rear of the mold, and a dividing member movable into said cavity to extend longitudinally therein and divide said cavity into front and rear compartments, communicating passages being provided between said compartment exteriorly of one of the faces thereof which define the thickness of the slug cast therein, said dividing member being retractable from said cavity to permit ejection therefrom of a slug cast therein.

5. A typographical mold comprising opposed members spaced to form a continuous casting cavity open at the front and rear of the mold, and a dividing member movable into position across said cavity and extending longitudinally thereof to divide said cavity into front and rear compartments, one of said members having passages therein which extend past said dividing member and connect said compartments, said dividing member being retractable from said cavity to permit ejection therefrom of a slug cast therein.

6. A typographical mold comprising opposed members defining a slug casting cavity of substantially uniform Width and open at the front and rear of the mold, and a dividing member to extend longitudinally in said cavity and divide it into front and rear compartments, one of said members having channels opening into and connecting said compartments, said channels being Wider at their bases than at their openings into said compartments.

7. A typographical mold comprising opposed members defining a slug casting cavity of substantially uniform Width and open at the front and rear of the mold, a dividing member movable past one of the mold members toward the opposed mold member to extend longitudinally in said cavity and divide the latter into front and rear compartments, the mold member opposite to said dividing member having channels in its casting face which are open to and connect said compartments at opposite sides of said dividing member, said dividing member being retractable from said cavity to permit ejection of the portions of a slug cast in said compartments.

8. A typographical mold comprising opposed members spaced apart to form a casting cavity, means to extend longitudinally in said cavity and divide it into front and rear compartments, passages connecting said compartments, and tongues extending across one of said compartments at the ends thereof, said dividing means and tongues being retractable.

9. A typographical mold comprising opposed relatively fixed members providing a slug casting cavity embodying front and rear compartments open at the front and rear respectively of the mold, and a dividing member movable toward one of the mold members to extend longitudinally of said cavity and to oiset and divide the front compartment thereof from the rear compartment, the portion of said dividing member exposed to the front compartment forming a casting face to define the thickness of the portion of the slug cast in said compartment and having channels exteriorly of said casting face which are open to and connect said compartments and are adapted to contain portions of the slug cast in the front compartment, said dividing member being retractable to bring the portion of the slug cast in the front compartment my hand.

RANSOM H. TURNER. 

